Howdy ya'll.... I am very new to this forum posting thing.... I don't even know if what i am typing will get posted.... and please, if I am doing something wrong or in the wrong area.... straighten me out.So here's my dilemma. The nicotine I am using is 100mg in 50ml of 100% VG base. the problem I have is with the calculation of how much nicotine to add, in order to achieve my desired strength. i prefer a 6mg strength ejuice. I put that number into the calculator, but i am confused by the ml that i am supposed to add to the juice in order to achieve the 6mg strength. And am I to understand that the nicotine added to a recipe is a "weight" rather than a "volume" of nicotine? Looking at the bottle of nicotine, 50 ml contains 100 mg of nicotine, right? So wouldn't 1 ml = 2 mg of nicotine? my confusion comes from putting my desired strength into the left side of the calculator and seeing a result on the right side that just doesn't add up to me. I would greatly appreciate if someone might be able to enlighten me as to how this should be looked at.Thank YouPegasus3179

The strength of nicotine is expressed in mg/ml. So regardless whether you have 100 or 50 ml 100% VG base, the amount of nicotine still remains 100mg/ml, as is the case with your nicotine base. To get to the desired amount (6mg/ml) you have to dillute it with zero nic base. Whether you want to mix by drops (least accurate), milliliters (less accurate) or weight (most accurate, but requires a trustworthy scale able to weigh accurately to at least two decimals behind the comma = 'hundreds of grams'), is up to your choice.

If you look at the main screen and you choose drops or milliters, just can just start filling in the fields. If you deceide to mix by weight, you'll have to open Tools > Grams set. As mentioned before, you'll need an accurate scale to do this. Default values can be found here. For flavors I use 1 gram/ml, just like water, unless specified differently.

In the screenshot attached you can see I entered your nicotine base (100mg/ml), the desired strength of nicotine in mg/ml in the result of your efforts. Now it's up to you to decide how much e-liquid you want to make (10ml in the screenshot, good starting point when you're new to mixing), which flavor(s) you want to add and in which amount (percentages!) and the bottom of the screen the ratio between PG/VG. Once you filled out the needed values, hit Calculate and EJuiceMeUp wiill do it's magic and will show your ingredient list and it's quantities on the right side of the screen.

Keep in mind that most flavors are PG-based, as PG carries flavor better than VG. Also 100% VG will be to thick for most tanks, so if your mixing for drippers, no issue, but if you're using tanks, you'll have to dillute the VG because otherwise it can't flow through the system. VG is quite a viscid fluid, so the ratio depends on how you want to use it and of course personal preference. Does this help you any further? Welcome to the wonderful world of DIY mixing!